This study evaluated the different expressions of cherry tomato growth, yield and quality under bamboo and rice husk biochar applications to soil. The experiment was conducted under glasshouse conditions at Hakozaki c...This study evaluated the different expressions of cherry tomato growth, yield and quality under bamboo and rice husk biochar applications to soil. The experiment was conducted under glasshouse conditions at Hakozaki campus, Kyushu University, Japan and consisted of 5 treatments, namely 1) no biochar application as a control;2) 2% (RH2) and 3) 5% (RH5) of rice husk biochar;4) 2% (BB2) and 5) 5% (BB5) of bamboo biochar. Bamboo biochar application significantly improved tomato growth, including number of leaves, fresh biomass yield of aboveground and underground parts for BB5;number of fruit;fresh yield from 24% - 25% for BB2 and BB5. In particular, both bamboo and rice husk biochar application at two rates 2% and 5% had positive effects on tomato quality, demonstrated by the increased total sugar content from 56% to 91%, and the enhancement of ascorbic acid content for BB2 and RH2 by 12% and 17%, respectively. Those improvements reflected the soil physiochemical property changes after biochar application, including the increase in plant available water for bamboo biochar amendment before and after cultivating by 25% - 38% and 9% - 18%, respectively, compared with those of control;and the increased total soil N for bamboo biochar treatments (11% - 14%). Generally, all data above support bamboo biochar utilization for the purpose of improving soil properties and developing crop production.展开更多
提高整个田块作物生长指标和产量的均匀性是实施变量灌溉水分管理的目标之一。该研究基于土壤可利用水量(available water holding capacity,AWC)将试验区划分为4个水分管理区,利用相同的灌水控制指标(0.45AWC)进行分区变量灌溉水分管理...提高整个田块作物生长指标和产量的均匀性是实施变量灌溉水分管理的目标之一。该研究基于土壤可利用水量(available water holding capacity,AWC)将试验区划分为4个水分管理区,利用相同的灌水控制指标(0.45AWC)进行分区变量灌溉水分管理;作为对照,基于最小AWC区的土壤水分进行均一灌溉水分管理。对比变量灌溉和均一灌溉条件下冬小麦、夏玉米生长指标(株高、叶面积指数、地上部分干物质质量)、叶片相对叶绿素含量、产量及其均匀性,分析AWC对作物生长和产量的影响。结果表明,与均一灌溉相比,夏玉米变量灌溉节水14.1%,冬小麦灌水量相同。与均一灌溉相比,变量灌溉对冬小麦、夏玉米生长指标、叶片相对叶绿素含量和产量的影响均未达到显著水平,而不同AWC管理区之间作物生长指标和产量的差异均达到了显著水平。为获得更高的作物产量,建议不同AWC管理区内采用不同的灌水控制指标。研究可为大型喷灌机变量灌溉水分管理决策提供依据。展开更多
文摘This study evaluated the different expressions of cherry tomato growth, yield and quality under bamboo and rice husk biochar applications to soil. The experiment was conducted under glasshouse conditions at Hakozaki campus, Kyushu University, Japan and consisted of 5 treatments, namely 1) no biochar application as a control;2) 2% (RH2) and 3) 5% (RH5) of rice husk biochar;4) 2% (BB2) and 5) 5% (BB5) of bamboo biochar. Bamboo biochar application significantly improved tomato growth, including number of leaves, fresh biomass yield of aboveground and underground parts for BB5;number of fruit;fresh yield from 24% - 25% for BB2 and BB5. In particular, both bamboo and rice husk biochar application at two rates 2% and 5% had positive effects on tomato quality, demonstrated by the increased total sugar content from 56% to 91%, and the enhancement of ascorbic acid content for BB2 and RH2 by 12% and 17%, respectively. Those improvements reflected the soil physiochemical property changes after biochar application, including the increase in plant available water for bamboo biochar amendment before and after cultivating by 25% - 38% and 9% - 18%, respectively, compared with those of control;and the increased total soil N for bamboo biochar treatments (11% - 14%). Generally, all data above support bamboo biochar utilization for the purpose of improving soil properties and developing crop production.
文摘提高整个田块作物生长指标和产量的均匀性是实施变量灌溉水分管理的目标之一。该研究基于土壤可利用水量(available water holding capacity,AWC)将试验区划分为4个水分管理区,利用相同的灌水控制指标(0.45AWC)进行分区变量灌溉水分管理;作为对照,基于最小AWC区的土壤水分进行均一灌溉水分管理。对比变量灌溉和均一灌溉条件下冬小麦、夏玉米生长指标(株高、叶面积指数、地上部分干物质质量)、叶片相对叶绿素含量、产量及其均匀性,分析AWC对作物生长和产量的影响。结果表明,与均一灌溉相比,夏玉米变量灌溉节水14.1%,冬小麦灌水量相同。与均一灌溉相比,变量灌溉对冬小麦、夏玉米生长指标、叶片相对叶绿素含量和产量的影响均未达到显著水平,而不同AWC管理区之间作物生长指标和产量的差异均达到了显著水平。为获得更高的作物产量,建议不同AWC管理区内采用不同的灌水控制指标。研究可为大型喷灌机变量灌溉水分管理决策提供依据。
